IRAKLIA Pivotal Trial for Patients WIth RRMM
The IRAKLIA pivotal trial was designed to demonstrate noninferiority of SARCLISA ESCENA™ (isatuximab-irfc) vs IV SARCLISA®
Noninferiority was reached for coprimary endpoints of ORR and Ctrough¹,²*

Steady state Ctrough GMR was 1.53 (90% CI: 1.32, 1.75).
*The noninferiority margin of ORR was 0.84 (calculated as 40% retention of the observed historical clinical benefit of the ORR ratio of 0.75 [upper 95% CI of the Pd to SARCLISA + Pd rate ratio in ICARIA-MM]). The noninferiority margin for cycle 6 day 1 predose Ctrough was 0.8.
Trial design

IRAKLIA, a multicenter, multinational, randomized, open-label, 2-arm, phase 3 study, evaluated SARCLISA ESCENA with CirCLIQ + Pd vs IV SARCLISA + Pd in patients with RRMM who had received at least one line of therapy, including lenalidomide and a proteasome inhibitor. Noninferiority coprimary endpoints: ORR and C<sub>trough</sub> at steady state (corresponding to predose at cycle 6 day 1).
Treatment was administered in both groups in 28-day cycles until disease progression or unacceptable toxicity.
aAdministered weekly in cycle 1.
Ctrough = trough concentration; GMR = geometric mean ratio; IV = intravenous; ORR = overall response rate; Pd = pomalidomide and dexamethasone; q2w = every 2 weeks; RR = relative risk; RRMM = relapsed or refractory multiple myeloma.
Fewer administration and site reactions

Systemic administration reactions
- Most systemic administration reactions were grade 1 or 2
- Grade 3 systemic administration reactions occurred in 0.4% of patients receiving SARCLISA ESCENA + Pd vs 1.1% of patients receiving IV SARCLISA. No grade 4 systemic administration reactions occurred
- The median time to onset of systemic administration reactions was 6.5 hours with SARCLISA ESCENA vs 1.0 hour with IV SARCLISA
- Systemic administration reactions did not lead to any treatment discontinuations in the SARCLISA ESCENA arm vs 0.8% of patients in the IV SARCLISA arm
Local reactions
- Injection site reactions were reported in 11 (4.2%) of patients, representing 19 of 5,145 (0.4%) injections
- All injection site reactions were grade 1 except one grade 2 event
- Most injection site reactions (78.9%) occurred on injection day, and most (89.5%) resolved within 1 day
- The most frequent injection site reactions were injection site erythema, injection site pain, and injection site swelling
- No treatment discontinuations occurred due to injection site reactions
Noninferiority was reached for coprimary endpoints of ORR and Ctrough¹,²*

Steady state Ctrough GMR was 1.53 (90% CI: 1.32, 1.75).
*The noninferiority margin of ORR was 0.84 (calculated as 40% retention of the observed historical clinical benefit of the ORR ratio of 0.75 [upper 95% CI of the Pd to SARCLISA + Pd rate ratio in ICARIA-MM]). The noninferiority margin for cycle 6 day 1 predose Ctrough was 0.8.
Trial design

IRAKLIA, a multicenter, multinational, randomized, open-label, 2-arm, phase 3 study, evaluated SARCLISA ESCENA with CirCLIQ + Pd vs IV SARCLISA + Pd in patients with RRMM who had received at least one line of therapy, including lenalidomide and a proteasome inhibitor. Noninferiority coprimary endpoints: ORR and C<sub>trough</sub> at steady state (corresponding to predose at cycle 6 day 1).
Treatment was administered in both groups in 28-day cycles until disease progression or unacceptable toxicity.
aAdministered weekly in cycle 1.
Ctrough = trough concentration; GMR = geometric mean ratio; IV = intravenous; ORR = overall response rate; Pd = pomalidomide and dexamethasone; q2w = every 2 weeks; RR = relative risk; RRMM = relapsed or refractory multiple myeloma.
Fewer administration and site reactions

Systemic administration reactions
- Most systemic administration reactions were grade 1 or 2
- Grade 3 systemic administration reactions occurred in 0.4% of patients receiving SARCLISA ESCENA + Pd vs 1.1% of patients receiving IV SARCLISA. No grade 4 systemic administration reactions occurred
- The median time to onset of systemic administration reactions was 6.5 hours with SARCLISA ESCENA vs 1.0 hour with IV SARCLISA
- Systemic administration reactions did not lead to any treatment discontinuations in the SARCLISA ESCENA arm vs 0.8% of patients in the IV SARCLISA arm
Local reactions
- Injection site reactions were reported in 11 (4.2%) of patients, representing 19 of 5,145 (0.4%) injections
- All injection site reactions were grade 1 except one grade 2 event
- Most injection site reactions (78.9%) occurred on injection day, and most (89.5%) resolved within 1 day
- The most frequent injection site reactions were injection site erythema, injection site pain, and injection site swelling
- No treatment discontinuations occurred due to injection site reactions
Adverse reactions (≥10%) in patients receiving SARCLISA ESCENA with CirCLIQ + Pd or IV SARCLISA + Pd
| Adverse reactions | SARCLISA ESCENA with CirCLIQ + Pd (n=263) | IV SARCLISA + Pd (n=264) | ||
| All grades | Grade 3–4 | All grades | Grade 3–4 | |
| Infections and infestations | ||||
| Upper respiratory tract infection* | 39% | 4.2% | 37% | [0] |
| Pneumonia* | 27% | 19% | 28% | [0] |
| COVID-19* | 14% | 4.6% | 18% | [0] |
| Musculoskeletal and connective tissue disorders | ||||
| Musculoskeletal pain* | 23% | 2.3% | 24% | [0] |
| Gastrointestinal disorders | ||||
| Diarrhea | 20% | 4.6% | 20% | [0] |
| Constipation | 14% | 0% | 13% | [0] |
| General disorders and administration site conditions | ||||
| Fatigue* | 29% | 4.9% | 22% | [0] |
| Peripheral edema | 8% | 0% | 12% | [0] |
| Systemic administration reaction | 1.5% | 0.4% | 25% | [0] |
| Psychiatric disorders | ||||
| Insomnia | 15% | 2.7% | 15% | [0] |
a Upper respiratory tract infection includes: upper respiratory tract infection, influenza, nasopharyngitis, rhinitis, pharyngitis, sinusitis, viral upper respiratory tract infection, respiratory syncytial virus infection, tonsillitis, oropharyngeal candidiasis, pertussis, upper respiratory fungal infection, acute sinusitis, tracheitis.
b Pneumonia includes: pneumonia, COVID-19 pneumonia, Pneumocystis jirovecii pneumonia, pneumonia influenza, pneumonia parainfluenzae viral, pneumonia bacterial, atypical pneumonia, coronavirus pneumonia, metapneumovirus pneumonia, pneumonia escherichia, pneumonia haemophilus, pneumonia respiratory syncytial viral, pneumonia viral, herpes simplex pneumonia, pneumonia acinetobacter, pneumonia adenoviral, pneumonia cytomegaloviral, pneumonia legionella, pneumonia mycoplasmal, pneumonia pneumococcal, and pneumonia pseudomonal.
c Includes 5 patients (1.9%) with fatal pneumonia.
d Includes 4 patients (1.5%) with fatal pneumonia.
e COVID-19 includes: COVID-19, COVID-19 pneumonia, coronavirus infection, coronavirus pneumonia, SARS-CoV-2 test positive.
f Includes 1 patient (0.4%) with fatal COVID-19.
g Musculoskeletal pain includes: arthralgia, arthritis, back pain, bone pain, musculoskeletal chest pain, musculoskeletal discomfort, musculoskeletal pain, myalgia, neck pain, noncardiac chest pain, pain in extremity, and spinal pain.
h Fatigue includes: fatigue, asthenia, malaise.
- Serious adverse reactions occurred in 53% of patients receiving SARCLISA ESCENA + Pd. The most frequent (≥5%) serious adverse reaction was pneumonia (20.5%)
- Fatal adverse reactions occurred in 5.7% of patients who received SARCLISA ESCENA + Pd, including pneumonia (1.5%), sepsis, pneumonia and sepsis, septic shock, staphylococcal sepsis, COVID-19, lower respiratory tract infection, and hemorrhagic stroke (0.4% each)
- The safety profile of SARCLISA ESCENA + Pd was consistent with the known safety profile of SARCLISA IV + Pd. Incidence of injection site and systemic administration reaction and injection site reactions were lower with subcutaneous route of administration
Laboratory abnormalities in patients receiving SARCLISA EXCENA + Pd vs IV SARCLISA + Pd
| Laboratory abnormalities | SARCLISA ESCENA with CirCLIQ + Pd (n=263) | IV SARCLISA + Pd (n=264) | ||
| All grades | Grade 3–4 | All grades | Grade 3–4 | |
| Hematology | ||||
| Decreased leukocytes | 98% | 62% | 90% | 56% |
| Decreased neutrophils | 98% | 51% | 95% | 44% |
| Decreased hemoglobin | 96% | 18% | 95% | 20% |
| Decreased lymphocytes | 94% | 49% | 99% | 42% |
| Decreased platelets | 85% | 26% | 84% | 23% |
| Decreased hemoglobin | 56% | 13% | 47% | 13% |
| Chemistry | ||||
| Decreased calcium | 48% | 0.6% | 49% | 0.4% |
| Decreased magnesium | 43% | 0.4% | 47% | 0% |
| Decreased albumin | 40% | 19% | 39% | 19% |
| Decreased alanine aminotransferase | 34% | 1.9% | 35% | 0.8% |
| Decreased sodium | 33% | 6% | 31% | 4.2% |
| Increased creatine | 32% | 5% | 23% | 2.7% |
| Increased alkaline phosphatase | 30% | 0.8% | 26% | 0% |
The denominator used for the percentage calculation is the number of patients with at least 1 evaluation of the laboratory test during the considered observation period.
IZALCO Trial for Patients With RRMM
SARCLISA ESCENA™ (isatuximab-irfc) with CirCLIQ + Kd met primary endpoint of ORR
Primary endpoint: ORR by IRC1

The median duration of treatment was 34 weeks (range: 1 to 66).1
IZALCO trial design
A sequential, open-label, phase 2 trial that evaluated SARCLISA ESCENA (1,400-mg fixed dose) with CirCLIQ + Kd in 74 patients with RRMM who had received 1 to 3 prior lines of therapy. In part 1, 8 patients received SARCLISA ESCENA syringe injection. In part 2, 66 patients received SARCLISA ESCENA syringe injection (cycles 1 to 3), followed by SARCLISA ESCENA with CirCLIQ (cycles 4 to 6), or SARCLISA ESCENA with CirCLIQ (cycles 1 to 3) followed by subcutaneous syringe injection (cycles 4 to 6). The primary endpoint was ORR by IRC.
IZALCO safety
- The most common adverse reactions (≥10%, all grades) were upper respiratory tract infection (54%), musculoskeletal pain (20%), pneumonia (18%), hypertension (14%), COVID-19 (12%), insomnia (12%), diarrhea (11%), and pyrexia (11%)
- Serious adverse reactions occurred in 41% of patients receiving SARCLISA ESCENA + Kd. The most frequent (≥5%) serious adverse reaction was pneumonia (11%)
- Fatal adverse reactions occurred in 5.4% of patients who received SARCLISA ESCENA + Kd, including meningitis (1.4%), acute pulmonary edema (1.4%), acute respiratory distress syndrome (1.4%), and death from unknown cause (1.4%)
- The most common hematology laboratory abnormalities (≥30%, all grades) were decreased lymphocytes (85%), decreased platelets (85%), decreased leukocytes (59%), decreased hemoglobin (56%), decreased calcium (55%), decreased neutrophils (47%), decreased sodium (44%), decreased magnesium (33%), increased alkaline phosphatase (33%), and decreased albumin (32%)
¹IRC = independent review committee; Kd = carfilzomib and dexamethasone; ORR = overall response rate; RRMM = relapsed or refractory multiple myeloma.
Primary endpoint: ORR by IRC1

The median duration of treatment was 34 weeks (range: 1 to 66).1
IZALCO trial design
A sequential, open-label, phase 2 trial that evaluated SARCLISA ESCENA (1,400-mg fixed dose) with CirCLIQ + Kd in 74 patients with RRMM who had received 1 to 3 prior lines of therapy. In part 1, 8 patients received SARCLISA ESCENA syringe injection. In part 2, 66 patients received SARCLISA ESCENA syringe injection (cycles 1 to 3), followed by SARCLISA ESCENA with CirCLIQ (cycles 4 to 6), or SARCLISA ESCENA with CirCLIQ (cycles 1 to 3) followed by subcutaneous syringe injection (cycles 4 to 6). The primary endpoint was ORR by IRC.
IZALCO safety
- The most common adverse reactions (≥10%, all grades) were upper respiratory tract infection (54%), musculoskeletal pain (20%), pneumonia (18%), hypertension (14%), COVID-19 (12%), insomnia (12%), diarrhea (11%), and pyrexia (11%)
- Serious adverse reactions occurred in 41% of patients receiving SARCLISA ESCENA + Kd. The most frequent (≥5%) serious adverse reaction was pneumonia (11%)
- Fatal adverse reactions occurred in 5.4% of patients who received SARCLISA ESCENA + Kd, including meningitis (1.4%), acute pulmonary edema (1.4%), acute respiratory distress syndrome (1.4%), and death from unknown cause (1.4%)
- The most common hematology laboratory abnormalities (≥30%, all grades) were decreased lymphocytes (85%), decreased platelets (85%), decreased leukocytes (59%), decreased hemoglobin (56%), decreased calcium (55%), decreased neutrophils (47%), decreased sodium (44%), decreased magnesium (33%), increased alkaline phosphatase (33%), and decreased albumin (32%)
¹IRC = independent review committee; Kd = carfilzomib and dexamethasone; ORR = overall response rate; RRMM = relapsed or refractory multiple myeloma.
ISASOCUT Trial for Patients With Non-Transplant NDMM
SARCLISA ESCENA™ (isatuximab-irfc) with CirCLIQ™ + VRd met primary endpoint of ≥VGPR
Primary endpoint: ≥VGPR1

The median duration of treatment was 12 months (range: 1.8 to 15.0).
ISASOCUT trial design
An open-label, single-arm, investigator-sponsored, phase 2 trial that evaluated SARCLISA ESCENA with CirCLIQ + VRd in 74 patients with NDMM who were not eligible for transplant. During induction (cycles 1 to 12), patients received SARCLISA ESCENA (1,400-mg fixed dose) with CirCLIQ + VRd. From cycle 13 onward, patients received SARCLISA ESCENA with CirCLIQ + R as continuous treatment until disease progression or unacceptable toxicity. The primary endpoint was ≥VGPR (sCR + CR + VGPR) using IMWG criteria.
ISASOCUT safety
- The most common adverse reactions (≥10%, all grades) were peripheral neuropathy (59%), peripheral sensory neuropathy (47%), constipation (43%), diarrhea (41%), fatigue (37%), musculoskeletal pain (32%), upper respiratory tract infection (30%), injection site reaction (27%), insomnia (26%), erythema (20%), rash (20%), COVID-19 (18%), back pain (16%), hypotension (16%), pneumonia (15%), nausea (15%), bronchitis (14%), muscle spasms (14%), decreased weight (14%), influenza (12%), urinary tract infection (12%), abdominal pain (11%), pyrexia (11%), rash macular (11%), and vomiting (11%)
- Serious adverse reactions occurred in 45% of patients receiving SARCLISA ESCENA + VRd. The most frequent serious adverse reaction (≥5%) was pneumonia (8%)
- Fatal adverse reactions occurred in 2.7% of patients who received SARCLISA ESCENA + VRd, including cardiorespiratory arrest (1.4%) and myocardial infarction (1.4%)
- The most common laboratory abnormalities (≥30%, all grades) were decreased lymphocytes (92%), decreased leukocytes (92%), decreased platelets (82%), decreased neutrophils (76%), decreased hemoglobin (41%), and increased alkaline phosphatase (42%)
CR = complete response; IMWG = International Myeloma Working Group; NDMM = newly diagnosed multiple myeloma; R = lenalidomide; sCR = stringent complete response; VGPR = very good partial response; VRd = bortezomib, lenalidomide, dexamethasone.
Primary endpoint: ≥VGPR1

The median duration of treatment was 12 months (range: 1.8 to 15.0).
ISASOCUT trial design
An open-label, single-arm, investigator-sponsored, phase 2 trial that evaluated SARCLISA ESCENA with CirCLIQ + VRd in 74 patients with NDMM who were not eligible for transplant. During induction (cycles 1 to 12), patients received SARCLISA ESCENA (1,400-mg fixed dose) with CirCLIQ + VRd. From cycle 13 onward, patients received SARCLISA ESCENA with CirCLIQ + R as continuous treatment until disease progression or unacceptable toxicity. The primary endpoint was ≥VGPR (sCR + CR + VGPR) using IMWG criteria.
ISASOCUT safety
- The most common adverse reactions (≥10%, all grades) were peripheral neuropathy (59%), peripheral sensory neuropathy (47%), constipation (43%), diarrhea (41%), fatigue (37%), musculoskeletal pain (32%), upper respiratory tract infection (30%), injection site reaction (27%), insomnia (26%), erythema (20%), rash (20%), COVID-19 (18%), back pain (16%), hypotension (16%), pneumonia (15%), nausea (15%), bronchitis (14%), muscle spasms (14%), decreased weight (14%), influenza (12%), urinary tract infection (12%), abdominal pain (11%), pyrexia (11%), rash macular (11%), and vomiting (11%)
- Serious adverse reactions occurred in 45% of patients receiving SARCLISA ESCENA + VRd. The most frequent serious adverse reaction (≥5%) was pneumonia (8%)
- Fatal adverse reactions occurred in 2.7% of patients who received SARCLISA ESCENA + VRd, including cardiorespiratory arrest (1.4%) and myocardial infarction (1.4%)
- The most common laboratory abnormalities (≥30%, all grades) were decreased lymphocytes (92%), decreased leukocytes (92%), decreased platelets (82%), decreased neutrophils (76%), decreased hemoglobin (41%), and increased alkaline phosphatase (42%)
CR = complete response; IMWG = International Myeloma Working Group; NDMM = newly diagnosed multiple myeloma; R = lenalidomide; sCR = stringent complete response; VGPR = very good partial response; VRd = bortezomib, lenalidomide, dexamethasone.
Indication
TK
